CA2311349C - Hierarchical transmission digital demodulator - Google Patents
Hierarchical transmission digital demodulator Download PDFInfo
- Publication number
- CA2311349C CA2311349C CA002311349A CA2311349A CA2311349C CA 2311349 C CA2311349 C CA 2311349C CA 002311349 A CA002311349 A CA 002311349A CA 2311349 A CA2311349 A CA 2311349A CA 2311349 C CA2311349 C CA 2311349C
- Authority
- CA
- Canada
- Prior art keywords
- carrier
- signal
- value
- output
- circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 230000005540 biological transmission Effects 0.000 title claims abstract description 61
- 230000001360 synchronised effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 13
- 238000001514 detection method Methods 0.000 description 10
- 230000001186 cumulative effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000006185 dispersion Substances 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 230000010355 oscillation Effects 0.000 description 2
- 239000000969 carrier Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
- H04L27/22—Demodulator circuits; Receiver circuits
- H04L27/233—Demodulator circuits; Receiver circuits using non-coherent demodulation
- H04L27/2332—Demodulator circuits; Receiver circuits using non-coherent demodulation using a non-coherent carrier
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/0014—Carrier regulation
- H04L2027/0024—Carrier regulation at the receiver end
- H04L2027/0026—Correction of carrier offset
- H04L2027/003—Correction of carrier offset at baseband only
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/0014—Carrier regulation
- H04L2027/0044—Control loops for carrier regulation
- H04L2027/0053—Closed loops
- H04L2027/0057—Closed loops quadrature phase
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/0014—Carrier regulation
- H04L2027/0044—Control loops for carrier regulation
- H04L2027/0071—Control of loops
- H04L2027/0079—Switching between loops
- H04L2027/0081—Switching between loops between loops of different bandwidths
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/0014—Carrier regulation
- H04L2027/0083—Signalling arrangements
- H04L2027/0089—In-band signals
- H04L2027/0093—Intermittant signals
- H04L2027/0095—Intermittant signals in a preamble or similar structure
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9-341870 | 1997-11-28 | ||
JP34187097A JP3392028B2 (ja) | 1997-11-28 | 1997-11-28 | 階層化伝送ディジタル復調器 |
PCT/JP1998/005379 WO1999029075A1 (fr) | 1997-11-28 | 1998-11-30 | Demodulateur numerique pour transmission hierarchisee |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2311349A1 CA2311349A1 (en) | 1999-06-10 |
CA2311349C true CA2311349C (en) | 2008-04-08 |
Family
ID=18349392
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002311349A Expired - Lifetime CA2311349C (en) | 1997-11-28 | 1998-11-30 | Hierarchical transmission digital demodulator |
Country Status (7)
Country | Link |
---|---|
US (1) | US6678336B1 (zh) |
EP (1) | EP1054537B1 (zh) |
JP (1) | JP3392028B2 (zh) |
CN (1) | CN1107399C (zh) |
CA (1) | CA2311349C (zh) |
DE (2) | DE1054537T1 (zh) |
WO (1) | WO1999029075A1 (zh) |
Families Citing this family (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3634187B2 (ja) | 1999-04-23 | 2005-03-30 | 株式会社ケンウッド | Bsデジタル放送受信機。 |
JP3438700B2 (ja) | 2000-05-24 | 2003-08-18 | 株式会社ケンウッド | Bsディジタル放送受信装置及びbsディジタル放送受信方法 |
DE10046575B4 (de) * | 2000-09-20 | 2005-03-10 | Siemens Ag | Verfahren zur Frequenzakquisition, insbesondere zur Initialfrequenzakquisition, einer mobilen Kommunikationseinrichtung |
US7483505B2 (en) * | 2001-04-27 | 2009-01-27 | The Directv Group, Inc. | Unblind equalizer architecture for digital communication systems |
US7471735B2 (en) | 2001-04-27 | 2008-12-30 | The Directv Group, Inc. | Maximizing power and spectral efficiencies for layered and conventional modulations |
US7502430B2 (en) * | 2001-04-27 | 2009-03-10 | The Directv Group, Inc. | Coherent averaging for measuring traveling wave tube amplifier nonlinearity |
US7423987B2 (en) | 2001-04-27 | 2008-09-09 | The Directv Group, Inc. | Feeder link configurations to support layered modulation for digital signals |
US7173981B1 (en) * | 2001-04-27 | 2007-02-06 | The Directv Group, Inc. | Dual layer signal processing in a layered modulation digital signal system |
US7583728B2 (en) * | 2002-10-25 | 2009-09-01 | The Directv Group, Inc. | Equalizers for layered modulated and other signals |
US8005035B2 (en) | 2001-04-27 | 2011-08-23 | The Directv Group, Inc. | Online output multiplexer filter measurement |
US7639759B2 (en) * | 2001-04-27 | 2009-12-29 | The Directv Group, Inc. | Carrier to noise ratio estimations from a received signal |
US7778365B2 (en) | 2001-04-27 | 2010-08-17 | The Directv Group, Inc. | Satellite TWTA on-line non-linearity measurement |
US7245671B1 (en) * | 2001-04-27 | 2007-07-17 | The Directv Group, Inc. | Preprocessing signal layers in a layered modulation digital signal system to use legacy receivers |
US7209524B2 (en) * | 2001-04-27 | 2007-04-24 | The Directv Group, Inc. | Layered modulation for digital signals |
US7822154B2 (en) * | 2001-04-27 | 2010-10-26 | The Directv Group, Inc. | Signal, interference and noise power measurement |
CA2489569C (en) * | 2002-07-01 | 2012-05-22 | The Directv Group, Inc. | Improving hierarchical 8psk performance |
US7738587B2 (en) | 2002-07-03 | 2010-06-15 | The Directv Group, Inc. | Method and apparatus for layered modulation |
US7474710B2 (en) * | 2002-10-25 | 2009-01-06 | The Directv Group, Inc. | Amplitude and phase matching for layered modulation reception |
CA2503530C (en) * | 2002-10-25 | 2009-12-22 | The Directv Group, Inc. | Lower complexity layered modulation signal processor |
US7502429B2 (en) * | 2003-10-10 | 2009-03-10 | The Directv Group, Inc. | Equalization for traveling wave tube amplifier nonlinearity measurements |
US7499696B2 (en) * | 2003-11-26 | 2009-03-03 | Delphi Technologies, Inc. | Method to optimize hierarchical modulation for a diversity system |
JP3917633B1 (ja) * | 2005-11-21 | 2007-05-23 | シャープ株式会社 | デジタル復調装置、その制御方法、デジタル復調装置用プログラム、デジタル復調装置用プログラムを記録した記録媒体及びデジタル受信装置 |
JP3930525B2 (ja) * | 2005-11-21 | 2007-06-13 | シャープ株式会社 | デジタル復調装置、その制御方法、その制御用プログラム、その制御用プログラムを記録した記録媒体及びデジタル受信装置 |
US7912111B2 (en) * | 2005-12-29 | 2011-03-22 | Trimble Navigation Ltd | Dynamic switching of carrier tracking loops without loss of tracking information |
CN101190137B (zh) * | 2006-11-27 | 2011-06-22 | 深圳迈瑞生物医疗电子股份有限公司 | 用于超声成像系统的实时数字正交解调方法与装置 |
JP4229180B2 (ja) * | 2006-12-08 | 2009-02-25 | ソニー株式会社 | 受信装置、制御方法、及びプログラム |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS556965A (en) * | 1978-06-30 | 1980-01-18 | Toshiba Corp | Carrier wave reproducing device |
JP2724145B2 (ja) * | 1987-03-24 | 1998-03-09 | 株式会社日立製作所 | 搬送波再生装置 |
EP0497433B1 (en) * | 1987-06-23 | 1995-09-20 | Nec Corporation | Phase controlled demodulation system for digital communication |
JPH0748750B2 (ja) * | 1988-11-15 | 1995-05-24 | 日本電気株式会社 | 同期復調装置 |
DE69232530T2 (de) * | 1991-03-27 | 2002-11-07 | Matsushita Electric Industrial Co., Ltd. | Signalübertragungssystem |
JP3304996B2 (ja) * | 1991-11-19 | 2002-07-22 | 株式会社東芝 | 搬送波再生回路 |
US5301206A (en) * | 1992-02-07 | 1994-04-05 | Victor Company Of Japan, Inc. | Spread spectrum communication system |
US5363408A (en) * | 1992-03-24 | 1994-11-08 | General Instrument Corporation | Mode selective quadrature amplitude modulation communication system |
US5363375A (en) * | 1993-07-30 | 1994-11-08 | Bell Communications Research, Inc. | Method and apparatus for synchronizing timing among radio ports in wireless communications systems using hierarchical scheme |
JP3139909B2 (ja) * | 1994-03-15 | 2001-03-05 | 株式会社東芝 | 階層的直交周波数多重伝送方式および送受信装置 |
KR0165507B1 (ko) * | 1996-01-09 | 1999-03-20 | 김광호 | 기준신호를 이용한 등화방법과 등화기 |
JP3253524B2 (ja) | 1996-05-28 | 2002-02-04 | 日本放送協会 | ディジタル伝送方法および送信、受信装置 |
-
1997
- 1997-11-28 JP JP34187097A patent/JP3392028B2/ja not_active Expired - Lifetime
-
1998
- 1998-11-30 WO PCT/JP1998/005379 patent/WO1999029075A1/ja active IP Right Grant
- 1998-11-30 DE DE1054537T patent/DE1054537T1/de active Pending
- 1998-11-30 EP EP98955991A patent/EP1054537B1/en not_active Expired - Lifetime
- 1998-11-30 US US09/554,669 patent/US6678336B1/en not_active Expired - Lifetime
- 1998-11-30 DE DE69839375T patent/DE69839375T2/de not_active Expired - Lifetime
- 1998-11-30 CN CN98811575.1A patent/CN1107399C/zh not_active Expired - Lifetime
- 1998-11-30 CA CA002311349A patent/CA2311349C/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE69839375T2 (de) | 2008-07-17 |
CN1280731A (zh) | 2001-01-17 |
EP1054537A1 (en) | 2000-11-22 |
US6678336B1 (en) | 2004-01-13 |
CN1107399C (zh) | 2003-04-30 |
EP1054537A4 (en) | 2005-09-21 |
EP1054537B1 (en) | 2008-04-16 |
CA2311349A1 (en) | 1999-06-10 |
WO1999029075A1 (fr) | 1999-06-10 |
DE1054537T1 (de) | 2001-06-07 |
JPH11163957A (ja) | 1999-06-18 |
DE69839375D1 (de) | 2008-05-29 |
JP3392028B2 (ja) | 2003-03-31 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKEX | Expiry |
Effective date: 20181130 |